The old Sonos BU150 Bundle is available from Hughes Direct, but in limited quantities. The only difference between this & the £799.99 newer BU250 is the remote control/dock. However you can buy the CR200 for £279.99, so you could pick up the BU150 & CR200 for less than the BU250 & have *two* remotes...! If you're already got an iPhone/iPod Touch then there's a free remote application.
Nearest price I could find is £600 at Sevenoaks. Hughes may have them in store, but will probably be ex-display.